Transmission line device



conductors to suspension in- Patented Aug 16, 1932 v ,sra'rnfsi .2 P TEN -"*orFicI-i 7 mar. ronmmusnn, or nnnnminanmsan, mandamus '10 wnsr menousn I nnncrmc a mnrac'rname comm, a oonronarron or rmmsvnvmmrnans'urssxon inns; nnvron 7 Application filed men 1:; 931, Serial No. 522,381, and lnfGerm'any, aim a; mo.

My invention relates to transmission-line devices, and particularly to means for' 'sup porting the cables thereof.

One object of my, 'nvention is tosiippress j vibrations in transmission-line cables.

Another object of my'invention is to pro vide a vibration-reducmg' support or clamp that shall be simple and-durable in construetion," economical to manufacture" and efiec tive in its operation.

Another object of; "invention is so utilize a spring for-damping transmissionline, oscillations thatit willnotbe required vide a spring-controlled damping'clampthat the spring to support the weight of the line. 7

'Another ob ect of my invention is to proshall permitthe removal and replacementof while the clampis. inservice. A further objector my invention is to provide afclamp that shall be adapted to. receive interchangeable parts forvarying the'operation thereof inaccordance with difierent con ditions. V

In high-voltage transmission-line practice,

line cables or sulators by means of springs, in order to reduc'e oscillationsjand to thereby render the breaking ofthe cable, at its point of su'spenf i sion,less likely to occur.

A serious objection to "chdevices is that it required;

An'ordinlary cable, under breakageyof the cable similar to the manner in which a small copper wire maybe broken by, repeated bendingat one spot.

In practicing my lnvention, 'I. provide a clamp icmises' fatigue of the device including a pair of clamps or cable-' cable to render the device adaptable to different operating conditions; to render cerline-oscillating conditions, and a iron construction and clamped in as indicated in Fig.3.

tain parts readily'replaceable and interchangeable and to provide a structure that is a of a devic'eembody ig."2 is a diagram illustrating, the o ra-" j tion; of the invention in one ofits aspe Fig. 3 s a v1e'w,-in "side elevation, of a structure similar to that of Fig. 1, but posvention.

Referring to Fig; y he device comP hers 48nd 6'for receiving a transmission-. line cable Sand a spring'lb-oennected he tween the members; and 6.

The element 2 may be a link forattachment to a suspensioninsulatonfas shown in- Fig! 3, ortconstitute a support of. other suitable characer.

Themembers 4 and 6 are adapted forthe reception of the cable 8, each comprisinga cable-receiving channel portion 12, a lever siblymore desirablein commercial practice,- 4

. 4 and 5 are views, similar to a por it a supporting or suspension element 2, fii'cmarm 14 for pivotal connection, as by'a pin 16, 1

to the element 2v and a portion 18 for secur- :ingithe endsof the spring 8. The latter, as i the springs do not lend themselves'to comm' mercial manufacture in the degree of elasticca'ted in the subsequent figures, may be removably mounted, augmented by damping means or replaced by arigid element or bar foroperationunder certain conditions. The members 4 and 6 may be of sheetmetal having the upper edges thereof crimped about the cablein clamping relation thereto or they"-,

may be of a usual malleable or dropforged In operation, whenthecable 8, atthe left a hand side of thestructure,asviewed in Fig.

1', oscillates or vibrates, the'membergi transfers the movement, through the spring 10, to the member 6. This movement sets up vibrations beyond the point of suspension, so that the vibration is divided or disthe energy of sipated over an appreciable: length of the other'ways, c

brations from the left-hand side of the device are passed through a pendulum 20, and vibrations from the right-hand side are passed throu h a pendulum 22, the vibrations being passed from one pendulum to the other through a spring 24 corresponding to the spring 10. v

The distance a, in Fig. 2, corresponds to the distance a in Fig. 1, which, if shortened or lengthened, would require a spring of different strength to correspondlngly transfer and dampen vibration forces of 1 like strength and amplitude. It is desirterially re localized bending of the cable.

' that are connected in series relation.

able that this distance be substantial in order to provide as much floating efiect on the cable as is commercially feasible with the materials available.

In structures of the usual type, there is only one member, corres onding to one of the members 4 and 6, which is connected directly below the supporting element 2. With such structure, verticalcomponents of the vibrations in the cable cause it to move vertically against the support, which is substan-.

tially rigid in the vertical direction, to cause fatigue and breakage in the cable.

By having the members 4 and 6 laterally displaced from the sup ort 2, in opposite directions along the cab e 8, the members 4 and 6 float more or less with the cable, so that the bendin stresses at any local spot are mauced. The distance between the members 4 and 6 depends upon the diameter and rigidity of the cable and should be sufiicient to permit substantial relative movement of the members 4 and 6, and to prevent undue Fig. 3 illustrates an adaptation of the de vice to usual practice by constituting the support 2 as a link de ending from the bottom unit 25 of a fiexib e string of similar units The members 4 and 6 may be duplicates if the arins 14 are disposed on opposite sides of the ca le.

Blocks 26, having helical grooves therein for the reception of the ends of the spring 10 and end lugs for the reception of pins 28, provide a simple, convenient commercial structure whereb the spring may be removed and replaced while in service. Duplicate clamping shoes 30 may be employed with one or more U-bolts 32, or equivalent elements, to clamp the cable in the channels 12, as heretofore employed in practice.

In the modification of my invention shown in Fig. 4, extensions 34 on the blocks 26 support a cylinder 36 and a piston 38, respectively, constituting dash-pot means for further damping vibration forces and reducing the effect thereof on the cable.

stituted therefor. Springs, such as leaf springs, and damping elements and rods of other forms equivalent to the structures illustrated may be similarly employed,

While I have shown and described particular forms of my invention,

spirit and scope there, as set forth in the appended claims.

I claim as my invention:

1. A transmission-line device comprising a support, a pluralit of relatively movable rigid members direct y movably connected to the support above the line cable for association with the cable, and an elastic element below the cable for transmitting cable vibrations between said members.

2. In combination, in a transmission-line device, a suspension element, a pair of cable: receiving members having portions pivotally connected to the element above the cable for extension oppositely therefrom at opposite sides of the cable in the general direction of the line, and yieldable means connecting said megpbers between positions thereon below the ca e.

3. In combination, in a transmission-line device, a suspension element, a pair of cablereceiving members pivotally connected to the element and extending oppositely therefrom in the general direction of the line, and means displaced from the pivot positions there of for receiving any one of a plurality of interchangeable elements for connection between said members.

4. In combination, ifila transmission-line device, a suspension ele cut, a pair of cablereceiving members pivotally connected to the element above the cable and having arms for extension oppositely therefrom in the general direction of the line at opposite sides of the cable, and means removably connecting said miiinbers between positions thereon below the ca e.

5. In combination, a suspension insulator, a link movably depending therefrom, a pair of cable-clamps for dis osition oppositely along the cable from the insulator, each having only one arm pivotally connected to said link above the cable, said arms being for disposition at opposite sides of the cable, and yieldable means connected between the clamps below the cable.

6. In combination, a. suspension element, a pair of cable-clamps for disposition oppositely along the cable from said element, each having an arm pivotally connected thereto above the cable, and yieldable means connected between the clamps below the cable.

7 In combination, a. suspension element, a pair of one-piece members each having pivotal connection thereto above the cable, and a cable-receiving portion, and means connected between sald members below the cable.

8. In combination, a sus ension element, a pair of one-piece members aving a common pivotal connection thereto above the cable and each having a. cable-receivin portion,

and means connected between 'sai members I below the cable.

9. In combination, a suspension element, a

pair of cable-receiving members for dis osition oppositely along the cable from sai element, each having an arm pivotally connect-v ed thereto above the cable, and yieldable means connected between the cable-receiving members below the cable.

10. In combination, a suspension element. a pair of cable-receiving members for disposition oppositely along the cable from said element, each having an arm pivotally connected thereto about the axis of the other above the cable, and yieldable means connected between the cable-receiving members below the cable.

In testimony whereof, I have hereunto subscribed my name this 9th day of December KARL POHLHAUSEN. 

